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How to

How to


Products: RP-C
Functionalities: Hardware
Product version: 3.0, 3.1, 3.2, 3.3, 2022
1/4/2022

Wiring a Screw Terminal on RP-C

You wire the screw terminals on the RP-C to connect I/O devices and power. Always use the recommended wires (or wires with larger cross-sectional area).

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The RP-C can be installed on a DIN rail or flat surface.

Rules and regulations

The RP-C must be professionally installed to comply with the following rules and regulations:

  • Part 15 of the Federal Communications Commission (FCC) rules

  • Innovation, Science and Economic Development Canada (ISED) licence-exempt Radio Standards Specifications (RSSs)

  • 2014/53/EU Radio Equipment Directive (RED) of the European Union (EU)

  • S.I. 2017/1206 - Radio Equipment Regulations 2017 of the United Kingdom (UK)

For more information, see RP-C Regulatory Compliance and Approvals .

The RP-C and its antenna(s) must be installed to provide a separation distance of at least 20 cm (8 in.) from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. Information on recommended RF exposure limits can be obtained from Health Canada's website, www.canada.ca/en/health-canada .

Installation orientation restrictions

The restrictions on installing the device in other orientations differ between the different RP-C controller models. For more information, see RP-C Models .

Notice

CONTROLLER DAMAGE

Follow the installation orientation restrictions that apply to the specific RP-C controller model.

Failure to follow these instructions can result in equipment damage.

Installation orientation restrictions for RP-C 24 V controller models

Under normal operating conditions of 0 to 50 °C (32 to 122 °F), the RP-C 24 V controller models can be installed in the following orientations:

  • Horizontally (on a DIN rail going from left to right), with the device label text in the upright position reading left to right. See “a” in the following figure.

  • Vertically (on a DIN rail going from top to bottom), which means that the device is rotated +90 degrees or -90 degrees from the horizontal position. See “b” and “c” in the following figure.

  • Face down from a ceiling. See “d” in the following figure.

  • Face up on a horizontal surface. See “f” in the following figure.

The only installation orientation that is not supported for the RP-C 24 V controller models is when the device is rotated 180 degrees from the horizontal position, that is, with device label text up and down. See “e” in the following figure. In the up and down position, the controller's thermal specifications may be exceeded, which can damage the controller.

 
action_zoom_plus_stroke Installation orientation restrictions for RP-C 24 V controller models operated in normal conditions, 0 to 50 °C (32 to 122 °F)

Installation orientation restrictions for RP-C 24 V controller models operated in normal conditions, 0 to 50 °C (32 to 122 °F)

When the RP-C 24 V controller models are used for rooftop applications, -40 to +60 °C (-40 to +140 °F), the device should be installed horizontally, with the device label text in the upright position reading left to right. See “a” in the following figure. Any other installation orientation (“b”, “c”, “d”, “e”, and “f” in the figure) may exceed the controller's thermal specifications, which can damage the controller.

 
action_zoom_plus_stroke Installation orientation restrictions for RP-C 24 V controller models operated at -40 to +60 °C (-40 to +140 °F)

Installation orientation restrictions for RP-C 24 V controller models operated at -40 to +60 °C (-40 to +140 °F)

Installation orientation restrictions for RP-C 230 V controller models

Under normal operating conditions of 0 to 50 °C (32 to 122 °F), the RP-C 230 V controller models can be installed in the following orientations:

  • Horizontally (on a DIN rail going from left to right), with the device label text in the upright position reading left to right. See “a” in the following figure.

  • Vertically (on a DIN rail going from top to bottom), which means that the device is rotated +90 degrees or -90 degrees from the horizontal position. See “b” and “c” in the following figure.

Installing the RP-C 230 V controller models rotated 180 degrees from the horizontal position is not supported. See “e” in the following figure. Installing the RP-C 230 V controller models face down from a ceiling (“d” in the figure) or face up on a horizontal surface (“f” in the figure) is only supported in the operating temperature range 0 to 40 °C (32 to 104 °F), but not in the temperature range 0 to 50 °C (32 to 122 °F). Installing the controller in an orientation that is not supported may cause the controller's thermal specifications to be exceeded, which can damage the controller.

 
action_zoom_plus_stroke Installation orientation restrictions for RP-C 230 V controller models operated in normal conditions, 0 to 50 °C (32 to 122 °F)

Installation orientation restrictions for RP-C 230 V controller models operated in normal conditions, 0 to 50 °C (32 to 122 °F)

Installation on a DIN rail

A DIN rail is a common and convenient technique for installing the RP-C controller along with other associated control and monitoring devices. The most efficient ventilation is achieved with the wall-mounted DIN rail oriented horizontally and with adequate space provided between the RP-C rail and adjacent rails or other devices.

The RP-C controller is typically installed horizontally (on a DIN rail going from left to right), with the device label text in the upright position reading left to right.

 
action_zoom_plus_stroke Example of an RP-C controller installed on a horizontal DIN rail

Example of an RP-C controller installed on a horizontal DIN rail

Installation in a cabinet
 
action_zoom_plus_stroke RP-C controllers installed on horizontal DIN rails in a cabinet

RP-C controllers installed on horizontal DIN rails in a cabinet

When installing RP-C controllers in a cabinet, it is recommended to provide ample space between the DIN rails and controllers for sufficient ventilation.

DIN rail end clip

To help prevent the device from sliding down or sideways on the DIN rail, install an end clip for DIN 35 (part number SXWDINEND10001) tightly against the bottom or rightmost device on the rail. The end clip is easily removed if you bend the snap lock open with a screwdriver.

Notice

CONTROLLER DEVICE DAMAGE

Use an end clip (part number SXWDINEND10001) when you install the BACnet/IP Controller device on a vertical DIN rail.

Failure to follow these instructions can result in equipment damage.

 
action_zoom_plus_stroke End clip for DIN 35 fixed across the DIN rail

End clip for DIN 35 fixed across the DIN rail

Screw terminals

All RP-C controller models have fixed screw terminals.

Anchor points for cable ties

The RP-C controller has four anchor points that can be used to fasten cable ties or other accessories for bundling wires.

 
action_zoom_plus_stroke Anchor points for cable ties

Anchor points for cable ties

Optional covers

All RP-C controller models can be equipped with optional covers to reduce access to the screw terminals and wires if desired.

 
action_zoom_plus_stroke Optional covers

Optional covers

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The wiring recommendations provide guidance regarding wiring of the Central IO modules, automation servers, BACnet/IP devices, RP controller expansion modules, and Operator Display.

I/O Wiring

The I/O wiring recommendations provide guidance on what type of wires should be used for the different Central IO modules, AS-B server onboard I/O, and BACnet/IP device onboard I/O, how to perform grounding, and how to connect different external devices to the inputs and outputs. This section also provides information on the external connectors required for the RP controller expansion modules. Always use the recommended cables and wires.

For more information, see I/O Wiring .

Communication Port Wiring

The wiring recommendations for the communication ports on the automation servers, BACnet/IP devices, RP controller expansion modules, and Operator Display devices apply to wires and cables used for RS-485 communications, LonWorks communications, USB connections, Ethernet connections, sensor bus connections, room bus connections, and RP controller Modbus network connections. Always use the recommended cables and wires.

For more information, see Communication Port Wiring .

Danger Danger

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Disconnect the power supply and other high voltage equipment before wiring.

Failure to follow these instructions will result in death or serious injury.

To wire a screw terminal on RP-C

  1. Disconnect the power supply and other high voltage equipment connected to the controller.

  2. Loosen the screw of the terminal.

  3. Strip approximately 7 mm (0.3 inch) of the insulation from the end of each wire.

  4. Insert the end of the wire fully into its intended terminal. Ensure that no bare wire strands extend from the terminal.

  5. Tighten the screw using a small flat-blade screwdriver. Ensure that the screw is fully tightened. Use the following recommended screw tightening torque: 0.56 to 0.79 Nm (5 to 7 lbf.in).

  6. Use appropriate cable strain relief methods, especially for wires that carry 30 VAC or 42.4 VDC or above, to help prevent any load applied to the cable from being transferred to conductor terminations.

    You can use the anchor points on the controller enclosure and cable ties to fasten and fix the cables.

See Also

  • RP-C Device Installation
  • RP-C Screw Terminals
  • RP-C-12A-F-24V Screw Terminals
  • RP-C-12B-F-24V Screw Terminals
  • RP-C-12C-F-24V Screw Terminals
  • RP-C-16A-F-230V Screw Terminals
  • RP-C-16B-F-24V Screw Terminals
  • RP-C-16B-F-230V Screw Terminals
  • Wiring
  • Powering Up an RP-C 24 V Controller Model
  • Powering Up an RP-C 230 V Controller Model